Product Highlights

• Software Configurable

• Eight Inputs Individually Configurable as Sink or

Source

• Type 1/3, Type 2, TTL and Hi-Z (HTL) Modes

• Wide Resistor-Settable Accurate Input Current

Ranging from 0.5mA to 6.75mA

• Programmable Glitch Filters

• Extensive Diagnostics (Supply Voltage

Monitoring, Temperature Alarms, PCB Fault

Alarms, Thermal Shutdown)

• Optional 16-bit Down-Counter Mode per Input

• Addressable or Daisy-Chain SPI to Reduce

Isolation Channels

• Robust Solution

• IEC 61000-4-2 ESD Airgap ±15kV and Contact

±8kV with Minimum 680Ω Pulse Resistor at Field

Inputs

• IEC 61000-4-5 Surge ±1.2kV/42Ω with Minimum

680Ω Pulse Resistor at Field Inputs

• Cyclic Redundancy Check (CRC) Error Detection

on SPI

• -40°C to +125°C Operating Temperature

• Low-Power Dissipation

• Operates from 8V to 36V Field Supply

• Low-Supply Current 2mA Maximum

• Compact Solution

• Integrated 5V, 20mA Linear Regulator

• 2.5V to 5.5V Logic Interface

• LED Driver Matrix or GPO Outputs

• 5mm x 5mm 32-Pin TQFN Package

Key Applications

• Programmable Logic Controllers

• Factory Automation

• Process Control

The MAX22196 is an industrial octal digital input that

translates eight industrial 24V or TTL level inputs to logic

level outputs. The device has a serial interface allowing

configuration and reading of serialized data through SPI.

The input channels are individually configurable as

sinking (p-type) or sourcing (n-type) inputs. Current

limiters on each digital input minimize power dissipation

while ensuring compliance with the IEC 61131-2

standard. With a single current-setting resistor, the

inputs are individually configurable for Type 1/3, Type 2,

TTL or HTL (high-impedance 24V levels). The current

sinks or sources can be individually disabled.

Every input channel has a programmable

glitch/debounce filter, and every input channel has an

optional 16-bit down-counter.

The MAX22196 can be powered from a field supply from

8V up to 36V for sink/source operation and has an

integrated 5V linear regulator that can provide up to

20mA of load current.